Now showing items 51-60 of 84
Morphogenic effects of halogenated thymidine analogs on drosophila II. Incorporation of 5-bromodeoxyuridine into DNA
(Elsevier, 1972-01)
When 5-bromodeoxyuridine is fed to Drosophila larvae, a variety of morphogenic lesions are found in the hatching adults. Experiments were undertaken to determine whether 5-bromodeoxyuridine is incorporated into Drosophila ...
Some information theoretic optimality criteria for general classification
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1971-06)
The interrelationship of cell growth and division in haploid and diploid cells of Saccharomyces cerevisiae
(Elsevier, 1977-05)
The coordination of cell growth and division has been examined in isogenic haploid and diploid strains of Saccharomyces cerevisiae. The average cell volume of the haploid and diploid cells was unaffected by a range of ...
Thermoregulation and heterothermy in some of the smaller flying foxes (Megachiroptera) of New Guinea
(Springer-Verlag, 1970-06)
Body temperature, heterothermy, oxygen consumption, heart rate, and evaporative water loss were studied in four species of flying foxes (Megachiroptera), Dobsonia minor, Nyctimene major, Nyctimene albiventer , and Paranyctimene ...
Faecal proteinases of the fungus-growing ant, Atta texana: Their fungal origin and ecological significance
(Elsevier, 1975-11)
The fluid contained within the mycelium of the fungus cultured by the attine ant, Atta texana, contains three proteolytic enzymes. One enzyme is a DFP-sensitive alkaline proteinase; the other two are metal-chelator-sensitive ...
Morphogenic effects of halogenated thymidine analogues on Drosophila . I. Quantitative analysis of lesions induced by 5-bromodeoxyuridine and 5-fluorouracil
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1972-02)
When 5-fluorouracil (FU) is offered simultaneously with 5-bromodeoxyuridine (BUdR) to Drosophila larvae, a variety of bristle modifications and hyperplastic growths are found on the wings of the adult flies. Administration ...
The totipotency and relationship of seta-bearing cells to thallus development in the green alga Coleochaete scutata. A laser microbeam study
(Elsevier, 1974-03)
The relationship of seta-bearing cells of Coleochaete scutata (Chlorophyta Ulotrichales) to normal growth and development of the thallus was investigated using laser microbeam irradiation. When all of the seta-bearing cells ...
Electron microprobe analysis of silica cells in leaf epidermal cells of Cyperus alternifolius
(Martinus Nijhoff, The Hague/Kluwer Academic Publishers; Martinus Nijhoff ; Springer Science+Business Media, 1972-02)
Electron microprobe analysis was used to examine relative amounts of selected accessory elements (Ca, Mg, K, Na, P, Mn, and Fe) associated with silicon in silica cells in leaf epidermal cells of Cyperus alternifolius . In ...
Silicification of developing internodes in the perennial scouring rush (Equisetum hyemale var. affine)
(Elsevier, 1973-03)
An electron microprobe (EMP) analysis of silica (SiO2) deposition in the epidermis of developing internodes of the perennial scouring rush (Equisetum hyemale var. affine) indicates that SiO2 is first detected in the stomatal ...
Nucleotide sequence divergence among DNA fractions of different syngens of Tetrahymena pyriformis
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1974-09)
The magnitude of the differences in base sequence of DNA fractions derived from different syngens of the ciliated protozoan Tetrahymena pyriformis was investigated. Each DNA was fractionated into unique and repeated sequences ...